Multivane intake control valve



Sept 17, 1040. C. M. CHASTAIN E,- AL 2,215,000N

MULTIVANE INTAKE CONTROL VALVE VFiled April 18, 19:58

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ATTORNEYS Patented Sept. v17, 194D MUALTIVAN INTAKE CONTROL VALVE Clifton rM.

Chastain and Shirley Johnson, lillinerall Wells, Tex.

c ,l vApplication April `18,

' 2 claims.

Y. 'This' inventionrelates to'valves for thecontrol' of -air or fuel-intothe compression chamber .of

an internali combustion engine of theftwocycle l type, and has for the primaryobject the provision of a'multivane type device of this character which will `provide a positive controlof fuell or air into thevcompression chamber vadmitting fuel'or air thereto during one stroke of the piston and closy ingzthe supply of'fuel or air to said compression advantage of permitting fuel o r vair to passv the same direction through the valve housing in as the direction of rotation 'of the vanesto pre-r vent undue disturbance of the fuel or air.

With these and other objects in view, this in-` vention consists in certain novel features of construction,v to be hereinafter more claimed.

Fora complete understanding of our invention, reference is to be had to the following descrip# tion and accompanying drawing, in which Figure 1 is a fragmentary horizontal sectional view showing a two cycle typey 0f internal combustion engine and opposed cylinders equipped with a control valve constructed in accordance with our invention.

Figure 2 is a view similar to Figure l showing the valve closing the source of fuel or air to the lcompression chamber while the piston is permitting the transfer of the fuel o r air under compression from the compression-,chamber tothe firing chamber. Y f v Figure 3 isf'a horizontal sectional view 'showing the vanesl of the valve positioned as when fuel or air is admitted to thecompression chamber.

I-l of Figure 3.

Referring in detail to the drawing, the numeral I indicates a fragmentary portion of an internal combustion engineof a two'cycle opposed cylinder type frequently employed for outboard motorswherein the cylinders are indicated by the character 2 yconnected by .a crank case i, thev cylinders having passages connecting lthe firing chambers of the cylinders with the crank casel 50 .during crank shaft is indicated by the character 6 and l is .connected yto the pistons by connectingrods 1v so that the pistons move'in unison, that is, the pistons move together on their intake,'0m

55 pression andI Am'ing stroges.

chamber onr the next stroke of thepiston so thatfully described and.,

Figure A is aseotional viewvtaken on the line certainy positions of the pistons 6. 'I'he '1938, serial No. 202,717 (ci. 12a-s6) I'he ignition mediums for the cylinders are indicatedy by thev character 8 and the exhaust ports bythe character 9./ The construction described is common in the type of engine referred to and to which the present invention is adapted. 5 vFormed on the crankcase 3 is a `valve housing III` having communication with the crank case by a port I I` and is provided with an intake port I2.' Integral with the` valve `housing is a gear housing I3. :A shaft I4 is journaled and I3 and has secured thereto a gear yIii meshing with a gear I6 secured on the crank shaft B. Secured on the shaft .I4 in the valve housing is a rotor I1 including equallyv spaced radially L extending vanes I8 having wipingcontact with 15 the walls of the valve `housing and adaptedto openvand close the ports I2 andiI`Ivv to each other ,during the rotation thereof.v gearing be' tween the shaft I4 and the crank shaftv is such .that the crank shaft makes lutionsto one revolution of therotor. The timing of the rotor with theA pistons is such that the vanesopen the ports I2 and I I'to each other during the suction stroke of the pistons 5 and close the ports I2 and II during the compression and 25 firing strokes of the pistons. It is to be understood that the port I2 is connected to a fuel source (not shown).

The direction of rotation of the vanesv is in thel same direction of the path of travel of the 30 fuel from the port I2 to the port il through the housing I0 so as not to unduly disturb the fuel.

., In operation, during the outward movement or suction strokes of the pistons 5 the vanes I8 are positioned to communicate-the ports I2 and 35 II so that fuel will be drawn into the crank case and as the pistons complete their suction strokes or reach their outermost positions, the vanes close, the ports I2 and II to each other y and maintain said ports closed to each other o during the working or firing strokes of the pistons yor 'until said pistons reach their innermost positions with respect to the crank shaft. Duringthe initial movement of the pistons towards. the crankshaft the lfuel is compresed in the 45 crank case and as the pistons complete their inward movement or compression strokes, the pistons open the compression chamber to the firing chamber as well as the exhaust ports 9 so that on the next outward movement of the pistons the fuel received from the crank case under compression is further compressed in the firing chambers and fired by the ignition medium on the pistons reaching their outermost pqsitions with respect to the' crank shaft, 55

in the housings I0 m three complete revo- '20 2 g 2,215,0ac

What is claimed is: f rectly'communicatlve with cylinders positioned 1. 'I'he combination withv an internal campusat diametrically opposed sides thereof. said cyltion enginevof the typehaving a crankcase diinders having hollow pistons reciprocally mountrectly 'communicative with cylinders positioned ed therein, said pistons having piston rods pivat diametrically' opposed sides thereof, said cylotally connected thereto and to acrankshaft l inders having hollow pistons reciprocaliy mountdisposed within said crankcase, said cylinders ed therein. said pistons having piston rods pivhaving fuel passages exteriorlythereof opening otally connected thereto and to a crankshaft through the cylinder walls at spaced points disposed within vsaid crankcase, said cylinders therealong in a manner whereby the upper ends v having fuel passages exteriorly thereof opening ofthe fuel passages will open into-the cylinder l0 through the cylinder walls at spaced points above the said pistons and the lower ends'of-the therealong in a manner whereby the upper ends said passages will open into the cylinders through v will open into the cylinders above the said pisaligning ports in the piston walls when the said f tons and the lower ends of the said passages pistons have completed their power stx'oke,fthey will open into the cylinders through an aligning ports in the said pistons being adapted to move 15 port in the piston walls when the said pistons Out 0f engagement With the Openings 0f the fuel have completed their power stroke, the ports in passage during their compression Stroke; of e the said pistons being adapted to move out of cylindrical housing formed exteriorly of they engagement with the openings of the fuel pascrankcase. said housing being entirely enclosed sage during their compression stroke; of a cylinexcept for an outlet 1302,45v Communicating With 20 dricalhousing formed exterioriy of the crankthe crankcase and an inlet port disposed .at case, said housing being entirely enclosed except right angles t0 the Said outlet Dort and come for an outlet port communicating with the munieating with a Source 0f fuel Supply; yand-a crankcase and an inlet port disposed at right Valve member IOtatabiy mounted `Within said angles to the said outlet port yand communicatingV housing, said Valve including three equi-spaced 26 with a source of fuel supply; a valve-'member radial vanes the'ends'ofl which-wningly ense-8e axially .mounted for rotation within said .housthe inner wall of the housing, adjacent pairs 0f ing, said valve having three equi-spaced radial Said Yanes being adaptedvfto straddle the'said vanes having a wiping contact with the inner inletand outlet ports during'the suction strokeV wall of the housing; and means to rotate said 0f the pistons of the said engine t0 permit DRS-A valve member in a manner whereby adjacent sage of fuel through the `housing and fto close: vanes will permit direct communication between communication between the said inlet and outthe inlet and outlet ports at preselected interlet'fports duringthe COmpressiOn and ring strokeA vals and close communication therebetween at of the pistons. 1 y i u other preselected intervals. CLIFTON M. CHASTAIN.- 2. The combination with an' internal combus v SHIRLEY JOHNSON. tion engine of the type havinga crankcase 'dii 

